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<p class="MsoNormal"><span style="font-size:11.0pt">Hello All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> As I mentioned in meeting we will incorporate review for nexthop to make it as leafref. It is taking a bit of our time as we want to explore nexthop-group yang that is defined in FRR. We will do that before
meeting but we may not have time for all of you to review before meeting. Sorry for delay.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Santosh P K <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Santosh P K <sapk@vmware.com><br>
<b>Date: </b>Thursday, 12 December 2019 at 12:40 AM<br>
<b>To: </b>FRRouting-Dev <dev@lists.frrouting.org><br>
<b>Subject: </b>Northbound changes discussion - MOM 12/12/2019</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Hello All,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> Below are the points discussed and concluded in today’s meeting. Please correct me If I have missed or captured few conclusions not as we concluded.
</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Discussion:</span><o:p></o:p></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">Use of nexthop as leaf ref.
</span><o:p></o:p></li><ol style="margin-top:0cm" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">FRR will have to satisfy nexthop being independent object and can be programed independently.
</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">Currently kernel supports this feature and so does FRR with nexthop groups.
</span><o:p></o:p></li></ol>
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span style="font-size:11.0pt;mso-fareast-language:EN-GB">NULL0 attribute handling</span><o:p></o:p></li><ol style="margin-top:0cm" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">We may not need NULL0 as this special nexthop and we should only provide blackhole interface.</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">Discussed about different type of interface avalible today in FRR.</span><o:p></o:p></li></ol>
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">FRR interface yang v/s IETF yang</span><o:p></o:p></li><ol style="margin-top:0cm" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">Why was FRR interface yang defined while we could have used IETF yang and added augmented more leaf to it.</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">It was done as a placeholder and we will need to revisit it.</span><o:p></o:p></li></ol>
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">VRF usage</span><o:p></o:p></li><ol style="margin-top:0cm" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">Discussed VRF usage for protocols. Should VRF be top of the tree or should be used as leafref.</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">Discussed different use of VRF being at top of tree and how it may help with configuration.</span><o:p></o:p></li></ol>
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">IETF data models usage</span><o:p></o:p></li><ol style="margin-top:0cm" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">Use of IETF data models should not restrict any existing feature that FRR supports today.
</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level2 lfo3"><span lang="EN-US" style="font-size:11.0pt">We should try to use existing IETF data model with deviations.</span><o:p></o:p></li></ol>
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">We will conclude on Staticd review before PIM and IGMP data model.</span><o:p></o:p></li></ol>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Conclusion:</span><o:p></o:p></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l3 level1 lfo10"><span lang="EN-US" style="font-size:11.0pt">Staticd Yang module will have leafref to nexthop. For this we need to deviate from IETF nexthop and have our own nexthop container defined.</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l3 level1 lfo10"><span lang="EN-US" style="font-size:11.0pt">Null0 is not required and providing blockhole is enough.</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l3 level1 lfo10"><span lang="EN-US" style="font-size:11.0pt">VRF should not be restricted on how it should be used with in FRR. It should be used as appropriate for a given protocol. </span><o:p></o:p></li></ol>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">We will meet again on Friday to discuss over the next review items and questions will be published beforehand.
</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Thanks</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Santosh P K </span>
<o:p></o:p></p>
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